In complete sentences, answer these questions in the essay box below. Be sure to use the data and observations you collected if needed.

What are the bubbles that the elodea released made of?

What conclusions can you draw about the relationship between light intensity and the rate of photosynthesis? Be sure to refer to your data and justify your response.

What is another way that the intensity of the light could be tested? Describe your procedure.

Look at the photosynthesis reaction 6H2O + 6CO2 -➔ C6H12O6 + 6O2. What do you think might be other factors that can affect the rate of this reaction?

Make a hypothesis about your answer to question 4.

Design an experiment to test your hypothesis in question 5.

here's your

hope it

trachea, alveoli, lung capillaries, arteries

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.